Hundreds of new U.S. counties were declared disaster areas on Wednesday amidst the country’s worst drought in decades. We’re joined by famed environmental activist and 350.org founder Bill McKibben, whose new article for Rolling Stone magazine is called “Global Warming’s Terrifying New Math: Three simple numbers that add up to global catastrophe — and that make clear who the real enemy is.” Responding to climate skeptic Richard Muller’s reversal on global warming, McKibben says: “It’s scientifically not very interesting because most scientists figured it out 20 years ago, and all [Muller] has done is confirm their work. Politically, it’s interesting because we’re reaching the point where even industry-funded deniers can’t with a straight face say that [the earth] is not warming.” – Democracy Now

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What does 350 mean?

350 is more than a number—it's a symbol of where we need to head as a planet. To preserve our planet, scientists tell us we must reduce the amount of CO2 in the atmosphere from its current levels to 350 parts per million (ppm) - the safe limit to support life as we know it.

Learn more about 350—what it means, where it came from, and how to get there.
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